Degintion of the Terms "Kalpa" And "Caturyuga," and an Explication of the One by the Other.

By the same name, kalpa-oh arqana, people also call the sum of days of any era up to a certain date.

Our Muslim authors call the days of the kalpa the days of the Sind-hind or the days of the ioorld, counting them as 1,577,916,45°,000 days (sdvana or civil days), or 4,320,000,000 solar years, or 4,452,775,000 lunar years. The same sum of days converted into years of 360 civil days is equal to 4,383,101,250 of them, and to 12,000,000 divya-yea1"s.